Auto pause videos playing in background tabs

When starting playback in a foreground tab, all background playback will be paused.
You can open many videos in new tabs, then switch to them and the other tabs will be automatically paused.

---

done:

• pause background videos when foreground video started playback
• don't pause foreground video when background video starts

to do (eta: soon™):

• don't pause background videos if foreground video starts muted
• pause videos that started playing in a background tab, eg. after a reload (possible conflict with browser/system controls)

---

Other scripts you may like:

• YouTube - Proper Description
• YouTube - Shorts Redirect
• YouTube - Stay Active and Play Forever
• Find more on my profile